LAUSR

Abstract The present investigation, pure and ceria (CeO2) doped strontium titanate (SrTiO3) powders have been synthesized by the solid-state reaction method. In addition, the effect of ceria (0, 1, and 3%) on the variation of crystallite size, crystalline nature, surface particle shape, optical absorption, optical band gap, dielectric constant, dielectric loss and electric conductivity of SrTiO3 material through physico-chemical characterization like powder X-ray diffraction (XRD), Field-emission scanning electron microscopy (FE-SEM), UV–Visible spectra and impedance spectroscopy have been investigated. The powder XRD display confirms the evolution of the single phase with cubic structure of SrTiO3 material. Further, we confirmed the formation of strontium titanate material through spectral studies like Fourier Transforms Infrared (FTIR), Raman spectrum and Energy dispersive X-rays studies. X-rays photoelectron spectroscopy (XPS) explains the surface chemical elements and their binding energy of pure and 3% ceria doped strontium titanate. The optical band gap values of SrTiO3 decreases emphasized a red shift with increasing the ceria concentration. Dielectric constant, dielectric loss and electrical conductivity of pure and ceria doped SrTiO3 have been comparatively discussed in detail.